Maetffi petee hayes



(No Model.)

M. P. HAYES.

EVAPORATING APPARATUS.

Patented Mar. 18

A M A Z AM WITNESSES A fforneys Uurrnn 'rnrns ATENT tries.

MARTIN PETER HAYES, OF SEAFORTH, ONTARIO, CANADA.

EVAPORATING APPARATUS..

SPECIFICATION forming part of Letters Patent No. 295,169, dated March 18, 188%.

' Application filed June 26, 1883. (No model.)

To all whom it may concern Be it known that I, lvLlRTIN PETER Haves,

a citizen of Canada, residing at Seaforth, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Evaporating Apparatus; and I do declare the following to be a full, clear, and exact descriptionof theinvention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention pertains to improvements in that class of devices termed salt-blocks and furnaces for the evaporation of brine, having for its object, among other things, to secure an expeditious evaporation of the contents of the evaporating-pan, to prevent .the warping of the pan. to promote combustion, and increase the draft; and to these ends it consists of the detailed construction and arrangement of the parts, substantially as hereinafter fully set forth and claimed.

In thedrawings, Figure l is a plan view of my improved salt-block and furnace. Fig. 2 is a longitudinal section, and Fig. 3 is a vertical transverse section, of the same.

In carrying into effect my invention I con-, st-ruct of masonry a rectangular inclosure, A, with double walls at its sides, as at a a, and an intermediate air-space to prevent the radiation of heat, and with three compartments, one of which constitutes the furnace I), being arranged at one end; the second, which con stitutes a combustion-chamber, 0, being arranged next to the latter, and the third, which is thefiue-chamber d, occupying the remaining interior portion of the inclosure. The walls of the combustion-chamber are made of firebriclc or other refractory material. The .bot-

' tom of the flue-chamber d is provided with a double thickness of plank floor, e, and upon that is placed, to the depth of about a foot, a heat non-conducting substance, consisting of wood or coal ashes mixed with a small portion of salt, as indicated at j. This promotes evaporation, and takes up sufficient caloric, which it gives off to the pan, to prevent the sudden cooling thereof after extinguishing the fire, and consequently prevents the warping and twisting of the pan. At the rear end of the block or inclosure is the smoke-flue or chimney B, having a double wall, B B, and

small grate and opening, to permitthe building of a small fire in the lower part of the chamber thus provided to the smoke-flue or chimney, the purpose of which is to rarefy the air of the flue or chimney, and thus increase the draft for the fire in the furnace. Longi tudinal upright partitions, ofmasonry,0 G, extend through the flue'chamher d, dividing it into-a series of similar fines, G O. Placed above these, and resting upon the top walls of the block or inclosure, is the evaporatingpan D, to receive and hold the brine for evaporation. The pan has sloping sides and an outwardly-projecting flange, 9, arranged around its upper edge, to which are secured drain-boards. The sloping sides allow the salt to be easily withdrawn from the pan, and the flange prevents leakage of the brine down the outside face of the walls of the furnaceblock.

Extending through the heat non-conducting material f in the several fines are hot-air pipes E, the rear end of one of which passes through the chimney, while the same-named ends of the others pass directly out through that end of the block to receive the external air. The rear ends of these pipes are provided With valves to regulate the supply of air. The forward ends of these pipes enter combustionchamber 0 in the elbow form, as seen in Figs. 1 and 2. The office ofthese pipes is to introduce hot air into the combustionchamber to promote combustion and to generate increased draft.

The-heat and products of combustion pass from the furnace I) through the apertures b, and the heat from the combustion-chamber passes into the fines 0 through the apertures c.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The flue-chamber having heat non-conducting surface, consisting of the double thickat the base of which it is designed to have aness of boards and coal or wood ashes with its flue, and the hot-air pipes, substantially as salt, substantially as and for the purpose set and for the purpose set forth.

forth. In testimony whereof I afifix my signature i 2. The combination of the evaporating-pan presence of two witnesses.

5 0f the inclosure or block, having the iongi- MARTIN PETER HAYES.

tudinal flues, with a heat non-conducting Slll: Witnesses:

face or floor, the furnace oombustionehamber, F. HoLMEsTED,

the chimney having an air-space surrounding J AMES M. HAYES. 

